PythonTwistedTwistedTornadoAsyncioNativePython-Twisted V4 SDK Troubleshooting Guide


NOTICE: Based on current web trends and our own usage data, PubNub's Python Twisted SDK is deprecated as of May 1, 2019. Deprecation means we will no longer be updating the Python Twisted SDK but will continue to support users currently using it. Please feel free to use our other Python SDK offerings as they will continue to be supported and maintained. If you would like to use the Python Twisted SDK specifically, we would love to work with you on keeping this project alive!

import pubnub
import logging

pubnub.set_stream_logger('pubnub', logging.DEBUG)
from pubnub import PubNubTwisted


In case of deferred() calls, you should add error callback via addErrback to returned deferred. Errors that will be passed to given errback will wrapped out by either TwistedEnvelope or PubNubTwistedException which both implement two object fields:

  • e.result - a request result object in case of success, otherwise None.
  • e.status - PNStatus object with useful information about the finished request. You may check if it was an error or a success using e.is_error() helper.
def publish():
    def succ(envelope):

    def errback(error):
        print("Error %s" % str(e))
        print("Error category #%d" % e.status.category)